I'll only say I've made a few deer kills at long range with 7mm, 150-gr ttsx's started at 2950-3000 fps and while, yes, they were kills with entrance and exit, there was very little evidence of much expansion inside and at the exit point.
I'd strongly consider the Accubond if going longer is a real possibility--better B.C. obviously with more energy and you will likely get more expansion, though there is little doubt the other two placed right wouldn't work also.
As your pic's indicate, the TTSX's are generally very accurate and the 140-gr TTSX out of my 284 is also going into .5 MOA at 400 yards. I can start it at 3100 fps with R17. I've taken several BG animals so far with it and that bullet but all have been relatively close where they've worked very well.
Strangely, my 300 Wby doesn't seem to like the 168-gr TTSX much.
